Charles C Ellison

US Patent:

20210322951, Oct 21, 2021

Filed:

Apr 21, 2020

Appl. No.:

16/854874

Inventors:

- Alexandria VA, US
Scott A Waisner - Vicksburg MS, US
Charles C Ellison - Vicksburg MS, US
Jacob M Lalley - Vicksburg MS, US
Christopher S Griggs - Vicksburg MS, US

International Classification:

B01J 20/20
C02F 1/28

Abstract:

In one embodiment, a system of PFAS (Per-Poly-fluorinated alkyl substances) effluent liquid treatment includes: a pump to pump a liquid received via an intake; a sediment filter to filter sediment from the liquid; a granular activated carbon (GAC) device, disposed downstream of the sediment filter, to remove organic contaminants from the liquid; one (preferably two) or more ion exchange resin columns, disposed downstream of the GAC device, to remove PFAS constituents from the liquid; and a plurality of control valves being controlled to direct the liquid to flow along one or more liquid flow paths through the ion exchange resin columns so as to adjust a rate of processing the liquid by the ion exchange resin columns. Directing the flow takes into consideration factors including any minimum rate of processing, any maximum amount of waste generation, and any target remaining PFAS contamination in the liquid after processing.